Twilight: UW (Righteousness and intelligence)Rainbow Dash: RG (Timmy deck. Quick spells, some ramping, and then AWESOME big creatures.)Pinkie Pie: Mono Red (She's practically a chaos god. What else would she be?)Apple Jack: UG (Stalling the game with fogs and counterspells, waiting for just the right time until she can get her MASSIVE creatures out and wipe the board clean.)Fluttershy: GW (Token deck, getting plenty of little critters out there to help her and then swinging with her massive army!)

Celestia: Mono White (amass her army, and exile any opponents' creatures. *to the moon*)Luna: BW (Crusading against her offenders with vampires, knights, and spirits to slowly torment and dwindle away at them.)

Trixie: RB (Tru on that. Flashy and erratic, trying to win at any cost.)Zecora: GB (All about using her graveyard to her advantage, scavenging what she can get to find exactly what she needs to beat you.)Spike: Blue Fatty Aggro Deck because Spike is the worst character and doesn't know what he's doing.Shining Armor: RW (Lots of soldiers, burn, and anything to just hammer away at his enemy.)

I agree with all of those except one...Spike will have vengeance. With Slivers.

Also, Rarity would probably have a mainly artifact-based deck or something.And Discord is aggressively manipulative, so I can imagine a combo of Red, Blue, and Black working well for him. Or just Red and Blue.

Twilight then proceed to hand Trixie her ass. I mean come on, Twilight is 100% nerd, and while Trixie is certainly a very sly figure when she needs to be, at the end of the day she’s just a stage performer who doesn’t have the time to practice games like this